[Blackfin] arch: fix bug - make memcpy return the dest addr.

The memcpy() function returns the src pointer instead of the dst pointer.
This patch fix this bug.

Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/arch/blackfin/lib/memcpy.S b/arch/blackfin/lib/memcpy.S
index 2e6336492b4b..e654a18a0754 100644
--- a/arch/blackfin/lib/memcpy.S
+++ b/arch/blackfin/lib/memcpy.S
@@ -70,8 +70,8 @@ ENTRY(_memcpy)
         /* Check for aligned data.*/
 
         R3 = R1 | R0;
-        R0 = 0x3;
-        R3 = R3 & R0;
+        R1 = 0x3;
+        R3 = R3 & R1;
         CC = R3;        /* low bits set on either address? */
         IF CC JUMP .Lnot_aligned;
 
@@ -83,7 +83,6 @@ ENTRY(_memcpy)
         /* less than eight bytes... */
         P2 = R2;
         LSETUP(.Lthree_start, .Lthree_end) LC0=P2;
-        R0 = R1;        /* setup src address for return */
 .Lthree_start:
         R3 = B[P1++] (X);
 .Lthree_end:
@@ -95,7 +94,6 @@ ENTRY(_memcpy)
         /* There's at least eight bytes to copy. */
         P2 += -1;       /* because we unroll one iteration */
         LSETUP(.Lword_loops, .Lword_loope) LC0=P2;
-        R0 = R1;
         I1 = P1;
         R3 = [I1++];
 #if ANOMALY_05000202
@@ -120,7 +118,6 @@ ENTRY(_memcpy)
 .Lnot_aligned:
         /* From here, we're copying byte-by-byte. */
         LSETUP (.Lbyte_start, .Lbyte_end) LC0=P2;
-        R0 = R1;        /* Save src address for return */
 .Lbyte_start:
         R1 = B[P1++] (X);
 .Lbyte_end:
@@ -135,7 +132,6 @@ ENTRY(_memcpy)
          * Don't bother to work out alignment for
          * the reverse case.
          */
-        R0 = R1;        /* save src for later. */
         P0 = P0 + P2;
         P0 += -1;
         P1 = P1 + P2;